| http://www.w3.org/ns/prov#value | - That area will be covered by an impermeable cap and contained by a slurry wall that extends 65 feet underground.</p><p>The layer of soil and sediment that serves as the protecting layer for the Upper Floridan Aquifer, called the Hawthorn Group, will serve as the bottom of the containment area.</p><p>Chemical treatments and mixtures including cement will be injected into the containment area to sta
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